RJ11/R9 4P4C panel feed-through connector, suitable for developing input/output configuration of custom telephone communication system, docking with narrow 4P4C cable to connect your communication system securely. RJ9 4P4C connector is compatible with CAT3 Ethernet cable, which can reliable mission in and network when used in combination. RJ11/RJ9 4P4C panel connector is used to extend the connection line of telephone handle and telephone headset. It is the traditional method of connecting equipment and machines to the Internet to build a long-distance communication and traffic communication center system. RJ11/RJ9 4P4C panel mount connector, the installation size matches the XLR panel/D-type panel with 24mm opening. Suitable for fixing on walls, desktops, equipment panels, racks, etc. Connector1:RJ9 4P4C Female Connector2:RJ9 4P4C Female Mount Type:XLR Panel/D-Type Panel Mount Colour:As Shown Material:plastics Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * XLR Panel/D-Type Panel Mount Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.